Forwarder – Trims and rounds sewed signatures and pastes covers on signatures to form books: Trims edges of sewed signatures. Rounds back of sewed signatures by working outer signatures forward toward fore-edge with fingers and pounding back into required curvature with hammer. Pastes end papers on book covers and pastes covers on sewed signatures to form finished books. May also be designated according to type of book completed as Blankbook Forwarder (printing industry).